1 use crate::config::*;
2
3 use crate::search_paths::SearchPath;
4 use crate::utils::NativeLib;
5 use crate::{lint, EarlyErrorHandler};
6 use rustc_data_structures::profiling::TimePassesFormat;
7 use rustc_errors::ColorConfig;
8 use rustc_errors::{LanguageIdentifier, TerminalUrl};
9 use rustc_target::spec::{CodeModel, LinkerFlavorCli, MergeFunctions, PanicStrategy, SanitizerSet};
10 use rustc_target::spec::{
11 RelocModel, RelroLevel, SplitDebuginfo, StackProtector, TargetTriple, TlsModel,
12 };
13
14 use rustc_feature::UnstableFeatures;
15 use rustc_span::edition::Edition;
16 use rustc_span::RealFileName;
17 use rustc_span::SourceFileHashAlgorithm;
18
19 use std::collections::BTreeMap;
20
21 use std::collections::hash_map::DefaultHasher;
22 use std::hash::Hasher;
23 use std::num::NonZeroUsize;
24 use std::path::PathBuf;
25 use std::str;
26
27 macro_rules! insert {
28 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr) => {
29 if $sub_hashes
30 .insert(stringify!($opt_name), $opt_expr as &dyn dep_tracking::DepTrackingHash)
31 .is_some()
32 {
33 panic!("duplicate key in CLI DepTrackingHash: {}", stringify!($opt_name))
34 }
35 };
36 }
37
38 macro_rules! hash_opt {
39 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, $_for_crate_hash: ident, [UNTRACKED]) => {{}};
40 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, $_for_crate_hash: ident, [TRACKED]) => {{ insert!($opt_name, $opt_expr, $sub_hashes) }};
41 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, $for_crate_hash: ident, [TRACKED_NO_CRATE_HASH]) => {{
42 if !$for_crate_hash {
43 insert!($opt_name, $opt_expr, $sub_hashes)
44 }
45 }};
46 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, $_for_crate_hash: ident, [SUBSTRUCT]) => {{}};
47 }
48
49 macro_rules! hash_substruct {
50 ($opt_name:ident, $opt_expr:expr, $error_format:expr, $for_crate_hash:expr, $hasher:expr, [UNTRACKED]) => {{}};
51 ($opt_name:ident, $opt_expr:expr, $error_format:expr, $for_crate_hash:expr, $hasher:expr, [TRACKED]) => {{}};
52 ($opt_name:ident, $opt_expr:expr, $error_format:expr, $for_crate_hash:expr, $hasher:expr, [TRACKED_NO_CRATE_HASH]) => {{}};
53 ($opt_name:ident, $opt_expr:expr, $error_format:expr, $for_crate_hash:expr, $hasher:expr, [SUBSTRUCT]) => {
54 use crate::config::dep_tracking::DepTrackingHash;
55 $opt_expr.dep_tracking_hash($for_crate_hash, $error_format).hash(
56 $hasher,
57 $error_format,
58 $for_crate_hash,
59 );
60 };
61 }
62
63 macro_rules! top_level_options {
64 ( $( #[$top_level_attr:meta] )* pub struct Options { $(
65 $( #[$attr:meta] )*
66 $opt:ident : $t:ty [$dep_tracking_marker:ident],
67 )* } ) => (
68 #[derive(Clone)]
69 $( #[$top_level_attr] )*
70 pub struct Options {
71 $(
72 $( #[$attr] )*
73 pub $opt: $t
74 ),*
75 }
76
77 impl Options {
78 pub fn dep_tracking_hash(&self, for_crate_hash: bool) -> u64 {
79 let mut sub_hashes = BTreeMap::new();
80 $({
81 hash_opt!($opt,
82 &self.$opt,
83 &mut sub_hashes,
84 for_crate_hash,
85 [$dep_tracking_marker]);
86 })*
87 let mut hasher = DefaultHasher::new();
88 dep_tracking::stable_hash(sub_hashes,
89 &mut hasher,
90 self.error_format,
91 for_crate_hash);
92 $({
93 hash_substruct!($opt,
94 &self.$opt,
95 self.error_format,
96 for_crate_hash,
97 &mut hasher,
98 [$dep_tracking_marker]);
99 })*
100 hasher.finish()
101 }
102 }
103 );
104 }
105
106 top_level_options!(
107 /// The top-level command-line options struct.
108 ///
109 /// For each option, one has to specify how it behaves with regard to the
110 /// dependency tracking system of incremental compilation. This is done via the
111 /// square-bracketed directive after the field type. The options are:
112 ///
113 /// - `[TRACKED]`
114 /// A change in the given field will cause the compiler to completely clear the
115 /// incremental compilation cache before proceeding.
116 ///
117 /// - `[TRACKED_NO_CRATE_HASH]`
118 /// Same as `[TRACKED]`, but will not affect the crate hash. This is useful for options that only
119 /// affect the incremental cache.
120 ///
121 /// - `[UNTRACKED]`
122 /// Incremental compilation is not influenced by this option.
123 ///
124 /// - `[SUBSTRUCT]`
125 /// Second-level sub-structs containing more options.
126 ///
127 /// If you add a new option to this struct or one of the sub-structs like
128 /// `CodegenOptions`, think about how it influences incremental compilation. If in
129 /// doubt, specify `[TRACKED]`, which is always "correct" but might lead to
130 /// unnecessary re-compilation.
131 #[rustc_lint_opt_ty]
132 pub struct Options {
133 /// The crate config requested for the session, which may be combined
134 /// with additional crate configurations during the compile process.
135 #[rustc_lint_opt_deny_field_access("use `Session::crate_types` instead of this field")]
136 crate_types: Vec<CrateType> [TRACKED],
137 optimize: OptLevel [TRACKED],
138 /// Include the `debug_assertions` flag in dependency tracking, since it
139 /// can influence whether overflow checks are done or not.
140 debug_assertions: bool [TRACKED],
141 debuginfo: DebugInfo [TRACKED],
142 lint_opts: Vec<(String, lint::Level)> [TRACKED_NO_CRATE_HASH],
143 lint_cap: Option<lint::Level> [TRACKED_NO_CRATE_HASH],
144 describe_lints: bool [UNTRACKED],
145 output_types: OutputTypes [TRACKED],
146 search_paths: Vec<SearchPath> [UNTRACKED],
147 libs: Vec<NativeLib> [TRACKED],
148 maybe_sysroot: Option<PathBuf> [UNTRACKED],
149
150 target_triple: TargetTriple [TRACKED],
151
152 test: bool [TRACKED],
153 error_format: ErrorOutputType [UNTRACKED],
154 diagnostic_width: Option<usize> [UNTRACKED],
155
156 /// If `Some`, enable incremental compilation, using the given
157 /// directory to store intermediate results.
158 incremental: Option<PathBuf> [UNTRACKED],
159 assert_incr_state: Option<IncrementalStateAssertion> [UNTRACKED],
160
161 unstable_opts: UnstableOptions [SUBSTRUCT],
162 prints: Vec<PrintRequest> [UNTRACKED],
163 cg: CodegenOptions [SUBSTRUCT],
164 externs: Externs [UNTRACKED],
165 crate_name: Option<String> [TRACKED],
166 /// Indicates how the compiler should treat unstable features.
167 unstable_features: UnstableFeatures [TRACKED],
168
169 /// Indicates whether this run of the compiler is actually rustdoc. This
170 /// is currently just a hack and will be removed eventually, so please
171 /// try to not rely on this too much.
172 actually_rustdoc: bool [TRACKED],
173 /// Whether name resolver should resolve documentation links.
174 resolve_doc_links: ResolveDocLinks [TRACKED],
175
176 /// Control path trimming.
177 trimmed_def_paths: TrimmedDefPaths [TRACKED],
178
179 /// Specifications of codegen units / ThinLTO which are forced as a
180 /// result of parsing command line options. These are not necessarily
181 /// what rustc was invoked with, but massaged a bit to agree with
182 /// commands like `--emit llvm-ir` which they're often incompatible with
183 /// if we otherwise use the defaults of rustc.
184 #[rustc_lint_opt_deny_field_access("use `Session::codegen_units` instead of this field")]
185 cli_forced_codegen_units: Option<usize> [UNTRACKED],
186 #[rustc_lint_opt_deny_field_access("use `Session::lto` instead of this field")]
187 cli_forced_local_thinlto_off: bool [UNTRACKED],
188
189 /// Remap source path prefixes in all output (messages, object files, debug, etc.).
190 remap_path_prefix: Vec<(PathBuf, PathBuf)> [TRACKED_NO_CRATE_HASH],
191 /// Base directory containing the `src/` for the Rust standard library, and
192 /// potentially `rustc` as well, if we can find it. Right now it's always
193 /// `$sysroot/lib/rustlib/src/rust` (i.e. the `rustup` `rust-src` component).
194 ///
195 /// This directory is what the virtual `/rustc/$hash` is translated back to,
196 /// if Rust was built with path remapping to `/rustc/$hash` enabled
197 /// (the `rust.remap-debuginfo` option in `config.toml`).
198 real_rust_source_base_dir: Option<PathBuf> [TRACKED_NO_CRATE_HASH],
199
200 edition: Edition [TRACKED],
201
202 /// `true` if we're emitting JSON blobs about each artifact produced
203 /// by the compiler.
204 json_artifact_notifications: bool [TRACKED],
205
206 /// `true` if we're emitting a JSON blob containing the unused externs
207 json_unused_externs: JsonUnusedExterns [UNTRACKED],
208
209 /// `true` if we're emitting a JSON job containing a future-incompat report for lints
210 json_future_incompat: bool [TRACKED],
211
212 pretty: Option<PpMode> [UNTRACKED],
213
214 /// The (potentially remapped) working directory
215 working_dir: RealFileName [TRACKED],
216 color: ColorConfig [UNTRACKED],
217 }
218 );
219
220 /// Defines all `CodegenOptions`/`DebuggingOptions` fields and parsers all at once. The goal of this
221 /// macro is to define an interface that can be programmatically used by the option parser
222 /// to initialize the struct without hardcoding field names all over the place.
223 ///
224 /// The goal is to invoke this macro once with the correct fields, and then this macro generates all
225 /// necessary code. The main gotcha of this macro is the `cgsetters` module which is a bunch of
226 /// generated code to parse an option into its respective field in the struct. There are a few
227 /// hand-written parsers for parsing specific types of values in this module.
228 macro_rules! options {
229 ($struct_name:ident, $stat:ident, $optmod:ident, $prefix:expr, $outputname:expr,
230 $($( #[$attr:meta] )* $opt:ident : $t:ty = (
231 $init:expr,
232 $parse:ident,
233 [$dep_tracking_marker:ident],
234 $desc:expr)
235 ),* ,) =>
236 (
237 #[derive(Clone)]
238 #[rustc_lint_opt_ty]
239 pub struct $struct_name { $( $( #[$attr] )* pub $opt: $t),* }
240
241 impl Default for $struct_name {
242 fn default() -> $struct_name {
243 $struct_name { $($opt: $init),* }
244 }
245 }
246
247 impl $struct_name {
248 pub fn build(
249 handler: &EarlyErrorHandler,
250 matches: &getopts::Matches,
251 ) -> $struct_name {
252 build_options(handler, matches, $stat, $prefix, $outputname)
253 }
254
255 fn dep_tracking_hash(&self, for_crate_hash: bool, error_format: ErrorOutputType) -> u64 {
256 let mut sub_hashes = BTreeMap::new();
257 $({
258 hash_opt!($opt,
259 &self.$opt,
260 &mut sub_hashes,
261 for_crate_hash,
262 [$dep_tracking_marker]);
263 })*
264 let mut hasher = DefaultHasher::new();
265 dep_tracking::stable_hash(sub_hashes,
266 &mut hasher,
267 error_format,
268 for_crate_hash
269 );
270 hasher.finish()
271 }
272 }
273
274 pub const $stat: OptionDescrs<$struct_name> =
275 &[ $( (stringify!($opt), $optmod::$opt, desc::$parse, $desc) ),* ];
276
277 mod $optmod {
278 $(
279 pub(super) fn $opt(cg: &mut super::$struct_name, v: Option<&str>) -> bool {
280 super::parse::$parse(&mut redirect_field!(cg.$opt), v)
281 }
282 )*
283 }
284
285 ) }
286
287 impl CodegenOptions {
288 // JUSTIFICATION: defn of the suggested wrapper fn
289 #[allow(rustc::bad_opt_access)]
instrument_coverage(&self) -> InstrumentCoverage290 pub fn instrument_coverage(&self) -> InstrumentCoverage {
291 self.instrument_coverage.unwrap_or(InstrumentCoverage::Off)
292 }
293 }
294
295 // Sometimes different options need to build a common structure.
296 // That structure can be kept in one of the options' fields, the others become dummy.
297 macro_rules! redirect_field {
298 ($cg:ident.link_arg) => {
299 $cg.link_args
300 };
301 ($cg:ident.pre_link_arg) => {
302 $cg.pre_link_args
303 };
304 ($cg:ident.$field:ident) => {
305 $cg.$field
306 };
307 }
308
309 type OptionSetter<O> = fn(&mut O, v: Option<&str>) -> bool;
310 type OptionDescrs<O> = &'static [(&'static str, OptionSetter<O>, &'static str, &'static str)];
311
build_options<O: Default>( handler: &EarlyErrorHandler, matches: &getopts::Matches, descrs: OptionDescrs<O>, prefix: &str, outputname: &str, ) -> O312 fn build_options<O: Default>(
313 handler: &EarlyErrorHandler,
314 matches: &getopts::Matches,
315 descrs: OptionDescrs<O>,
316 prefix: &str,
317 outputname: &str,
318 ) -> O {
319 let mut op = O::default();
320 for option in matches.opt_strs(prefix) {
321 let (key, value) = match option.split_once('=') {
322 None => (option, None),
323 Some((k, v)) => (k.to_string(), Some(v)),
324 };
325
326 let option_to_lookup = key.replace('-', "_");
327 match descrs.iter().find(|(name, ..)| *name == option_to_lookup) {
328 Some((_, setter, type_desc, _)) => {
329 if !setter(&mut op, value) {
330 match value {
331 None => handler.early_error(
332 format!(
333 "{0} option `{1}` requires {2} ({3} {1}=<value>)",
334 outputname, key, type_desc, prefix
335 ),
336 ),
337 Some(value) => handler.early_error(
338 format!(
339 "incorrect value `{value}` for {outputname} option `{key}` - {type_desc} was expected"
340 ),
341 ),
342 }
343 }
344 }
345 None => handler.early_error(format!("unknown {outputname} option: `{key}`")),
346 }
347 }
348 return op;
349 }
350
351 #[allow(non_upper_case_globals)]
352 mod desc {
353 pub const parse_no_flag: &str = "no value";
354 pub const parse_bool: &str = "one of: `y`, `yes`, `on`, `true`, `n`, `no`, `off` or `false`";
355 pub const parse_opt_bool: &str = parse_bool;
356 pub const parse_string: &str = "a string";
357 pub const parse_opt_string: &str = parse_string;
358 pub const parse_string_push: &str = parse_string;
359 pub const parse_opt_langid: &str = "a language identifier";
360 pub const parse_opt_pathbuf: &str = "a path";
361 pub const parse_list: &str = "a space-separated list of strings";
362 pub const parse_list_with_polarity: &str =
363 "a comma-separated list of strings, with elements beginning with + or -";
364 pub const parse_opt_comma_list: &str = "a comma-separated list of strings";
365 pub const parse_number: &str = "a number";
366 pub const parse_opt_number: &str = parse_number;
367 pub const parse_threads: &str = parse_number;
368 pub const parse_time_passes_format: &str = "`text` (default) or `json`";
369 pub const parse_passes: &str = "a space-separated list of passes, or `all`";
370 pub const parse_panic_strategy: &str = "either `unwind` or `abort`";
371 pub const parse_opt_panic_strategy: &str = parse_panic_strategy;
372 pub const parse_oom_strategy: &str = "either `panic` or `abort`";
373 pub const parse_relro_level: &str = "one of: `full`, `partial`, or `off`";
374 pub const parse_sanitizers: &str = "comma separated list of sanitizers: `address`, `cfi`, `hwaddress`, `kcfi`, `kernel-address`, `leak`, `memory`, `memtag`, `safestack`, `shadow-call-stack`, or `thread`";
375 pub const parse_sanitizer_memory_track_origins: &str = "0, 1, or 2";
376 pub const parse_cfguard: &str =
377 "either a boolean (`yes`, `no`, `on`, `off`, etc), `checks`, or `nochecks`";
378 pub const parse_cfprotection: &str = "`none`|`no`|`n` (default), `branch`, `return`, or `full`|`yes`|`y` (equivalent to `branch` and `return`)";
379 pub const parse_debuginfo: &str = "either an integer (0, 1, 2), `none`, `line-directives-only`, `line-tables-only`, `limited`, or `full`";
380 pub const parse_strip: &str = "either `none`, `debuginfo`, or `symbols`";
381 pub const parse_linker_flavor: &str = ::rustc_target::spec::LinkerFlavorCli::one_of();
382 pub const parse_optimization_fuel: &str = "crate=integer";
383 pub const parse_mir_spanview: &str = "`statement` (default), `terminator`, or `block`";
384 pub const parse_dump_mono_stats: &str = "`markdown` (default) or `json`";
385 pub const parse_instrument_coverage: &str =
386 "`all` (default), `except-unused-generics`, `except-unused-functions`, or `off`";
387 pub const parse_instrument_xray: &str = "either a boolean (`yes`, `no`, `on`, `off`, etc), or a comma separated list of settings: `always` or `never` (mutually exclusive), `ignore-loops`, `instruction-threshold=N`, `skip-entry`, `skip-exit`";
388 pub const parse_unpretty: &str = "`string` or `string=string`";
389 pub const parse_treat_err_as_bug: &str = "either no value or a number bigger than 0";
390 pub const parse_trait_solver: &str =
391 "one of the supported solver modes (`classic`, `next`, or `next-coherence`)";
392 pub const parse_lto: &str =
393 "either a boolean (`yes`, `no`, `on`, `off`, etc), `thin`, `fat`, or omitted";
394 pub const parse_linker_plugin_lto: &str =
395 "either a boolean (`yes`, `no`, `on`, `off`, etc), or the path to the linker plugin";
396 pub const parse_location_detail: &str = "either `none`, or a comma separated list of location details to track: `file`, `line`, or `column`";
397 pub const parse_switch_with_opt_path: &str =
398 "an optional path to the profiling data output directory";
399 pub const parse_merge_functions: &str = "one of: `disabled`, `trampolines`, or `aliases`";
400 pub const parse_symbol_mangling_version: &str = "either `legacy` or `v0` (RFC 2603)";
401 pub const parse_src_file_hash: &str = "either `md5` or `sha1`";
402 pub const parse_relocation_model: &str =
403 "one of supported relocation models (`rustc --print relocation-models`)";
404 pub const parse_code_model: &str = "one of supported code models (`rustc --print code-models`)";
405 pub const parse_tls_model: &str = "one of supported TLS models (`rustc --print tls-models`)";
406 pub const parse_target_feature: &str = parse_string;
407 pub const parse_terminal_url: &str =
408 "either a boolean (`yes`, `no`, `on`, `off`, etc), or `auto`";
409 pub const parse_wasi_exec_model: &str = "either `command` or `reactor`";
410 pub const parse_split_debuginfo: &str =
411 "one of supported split-debuginfo modes (`off`, `packed`, or `unpacked`)";
412 pub const parse_split_dwarf_kind: &str =
413 "one of supported split dwarf modes (`split` or `single`)";
414 pub const parse_gcc_ld: &str = "one of: no value, `lld`";
415 pub const parse_link_self_contained: &str = "one of: `y`, `yes`, `on`, `n`, `no`, `off`, or a list of enabled (`+` prefix) and disabled (`-` prefix) \
416 components: `crto`, `libc`, `unwind`, `linker`, `sanitizers`, `mingw`";
417 pub const parse_stack_protector: &str =
418 "one of (`none` (default), `basic`, `strong`, or `all`)";
419 pub const parse_branch_protection: &str =
420 "a `,` separated combination of `bti`, `b-key`, `pac-ret`, or `leaf`";
421 pub const parse_proc_macro_execution_strategy: &str =
422 "one of supported execution strategies (`same-thread`, or `cross-thread`)";
423 pub const parse_dump_solver_proof_tree: &str = "one of: `always`, `on-request`, `on-error`";
424 }
425
426 mod parse {
427 pub(crate) use super::*;
428 use std::str::FromStr;
429
430 /// This is for boolean options that don't take a value and start with
431 /// `no-`. This style of option is deprecated.
parse_no_flag(slot: &mut bool, v: Option<&str>) -> bool432 pub(crate) fn parse_no_flag(slot: &mut bool, v: Option<&str>) -> bool {
433 match v {
434 None => {
435 *slot = true;
436 true
437 }
438 Some(_) => false,
439 }
440 }
441
442 /// Use this for any boolean option that has a static default.
parse_bool(slot: &mut bool, v: Option<&str>) -> bool443 pub(crate) fn parse_bool(slot: &mut bool, v: Option<&str>) -> bool {
444 match v {
445 Some("y") | Some("yes") | Some("on") | Some("true") | None => {
446 *slot = true;
447 true
448 }
449 Some("n") | Some("no") | Some("off") | Some("false") => {
450 *slot = false;
451 true
452 }
453 _ => false,
454 }
455 }
456
457 /// Use this for any boolean option that lacks a static default. (The
458 /// actions taken when such an option is not specified will depend on
459 /// other factors, such as other options, or target options.)
parse_opt_bool(slot: &mut Option<bool>, v: Option<&str>) -> bool460 pub(crate) fn parse_opt_bool(slot: &mut Option<bool>, v: Option<&str>) -> bool {
461 match v {
462 Some("y") | Some("yes") | Some("on") | Some("true") | None => {
463 *slot = Some(true);
464 true
465 }
466 Some("n") | Some("no") | Some("off") | Some("false") => {
467 *slot = Some(false);
468 true
469 }
470 _ => false,
471 }
472 }
473
474 /// Use this for any string option that has a static default.
parse_string(slot: &mut String, v: Option<&str>) -> bool475 pub(crate) fn parse_string(slot: &mut String, v: Option<&str>) -> bool {
476 match v {
477 Some(s) => {
478 *slot = s.to_string();
479 true
480 }
481 None => false,
482 }
483 }
484
485 /// Use this for any string option that lacks a static default.
parse_opt_string(slot: &mut Option<String>, v: Option<&str>) -> bool486 pub(crate) fn parse_opt_string(slot: &mut Option<String>, v: Option<&str>) -> bool {
487 match v {
488 Some(s) => {
489 *slot = Some(s.to_string());
490 true
491 }
492 None => false,
493 }
494 }
495
496 /// Parse an optional language identifier, e.g. `en-US` or `zh-CN`.
parse_opt_langid(slot: &mut Option<LanguageIdentifier>, v: Option<&str>) -> bool497 pub(crate) fn parse_opt_langid(slot: &mut Option<LanguageIdentifier>, v: Option<&str>) -> bool {
498 match v {
499 Some(s) => {
500 *slot = rustc_errors::LanguageIdentifier::from_str(s).ok();
501 true
502 }
503 None => false,
504 }
505 }
506
parse_opt_pathbuf(slot: &mut Option<PathBuf>, v: Option<&str>) -> bool507 pub(crate) fn parse_opt_pathbuf(slot: &mut Option<PathBuf>, v: Option<&str>) -> bool {
508 match v {
509 Some(s) => {
510 *slot = Some(PathBuf::from(s));
511 true
512 }
513 None => false,
514 }
515 }
516
parse_string_push(slot: &mut Vec<String>, v: Option<&str>) -> bool517 pub(crate) fn parse_string_push(slot: &mut Vec<String>, v: Option<&str>) -> bool {
518 match v {
519 Some(s) => {
520 slot.push(s.to_string());
521 true
522 }
523 None => false,
524 }
525 }
526
parse_list(slot: &mut Vec<String>, v: Option<&str>) -> bool527 pub(crate) fn parse_list(slot: &mut Vec<String>, v: Option<&str>) -> bool {
528 match v {
529 Some(s) => {
530 slot.extend(s.split_whitespace().map(|s| s.to_string()));
531 true
532 }
533 None => false,
534 }
535 }
536
parse_list_with_polarity( slot: &mut Vec<(String, bool)>, v: Option<&str>, ) -> bool537 pub(crate) fn parse_list_with_polarity(
538 slot: &mut Vec<(String, bool)>,
539 v: Option<&str>,
540 ) -> bool {
541 match v {
542 Some(s) => {
543 for s in s.split(',') {
544 let Some(pass_name) = s.strip_prefix(&['+', '-'][..]) else { return false };
545 slot.push((pass_name.to_string(), &s[..1] == "+"));
546 }
547 true
548 }
549 None => false,
550 }
551 }
552
parse_location_detail(ld: &mut LocationDetail, v: Option<&str>) -> bool553 pub(crate) fn parse_location_detail(ld: &mut LocationDetail, v: Option<&str>) -> bool {
554 if let Some(v) = v {
555 ld.line = false;
556 ld.file = false;
557 ld.column = false;
558 if v == "none" {
559 return true;
560 }
561 for s in v.split(',') {
562 match s {
563 "file" => ld.file = true,
564 "line" => ld.line = true,
565 "column" => ld.column = true,
566 _ => return false,
567 }
568 }
569 true
570 } else {
571 false
572 }
573 }
574
parse_opt_comma_list(slot: &mut Option<Vec<String>>, v: Option<&str>) -> bool575 pub(crate) fn parse_opt_comma_list(slot: &mut Option<Vec<String>>, v: Option<&str>) -> bool {
576 match v {
577 Some(s) => {
578 let mut v: Vec<_> = s.split(',').map(|s| s.to_string()).collect();
579 v.sort_unstable();
580 *slot = Some(v);
581 true
582 }
583 None => false,
584 }
585 }
586
parse_threads(slot: &mut usize, v: Option<&str>) -> bool587 pub(crate) fn parse_threads(slot: &mut usize, v: Option<&str>) -> bool {
588 match v.and_then(|s| s.parse().ok()) {
589 Some(0) => {
590 *slot = std::thread::available_parallelism().map_or(1, std::num::NonZeroUsize::get);
591 true
592 }
593 Some(i) => {
594 *slot = i;
595 true
596 }
597 None => false,
598 }
599 }
600
601 /// Use this for any numeric option that has a static default.
parse_number<T: Copy + FromStr>(slot: &mut T, v: Option<&str>) -> bool602 pub(crate) fn parse_number<T: Copy + FromStr>(slot: &mut T, v: Option<&str>) -> bool {
603 match v.and_then(|s| s.parse().ok()) {
604 Some(i) => {
605 *slot = i;
606 true
607 }
608 None => false,
609 }
610 }
611
612 /// Use this for any numeric option that lacks a static default.
parse_opt_number<T: Copy + FromStr>( slot: &mut Option<T>, v: Option<&str>, ) -> bool613 pub(crate) fn parse_opt_number<T: Copy + FromStr>(
614 slot: &mut Option<T>,
615 v: Option<&str>,
616 ) -> bool {
617 match v {
618 Some(s) => {
619 *slot = s.parse().ok();
620 slot.is_some()
621 }
622 None => false,
623 }
624 }
625
parse_passes(slot: &mut Passes, v: Option<&str>) -> bool626 pub(crate) fn parse_passes(slot: &mut Passes, v: Option<&str>) -> bool {
627 match v {
628 Some("all") => {
629 *slot = Passes::All;
630 true
631 }
632 v => {
633 let mut passes = vec![];
634 if parse_list(&mut passes, v) {
635 slot.extend(passes);
636 true
637 } else {
638 false
639 }
640 }
641 }
642 }
643
parse_opt_panic_strategy( slot: &mut Option<PanicStrategy>, v: Option<&str>, ) -> bool644 pub(crate) fn parse_opt_panic_strategy(
645 slot: &mut Option<PanicStrategy>,
646 v: Option<&str>,
647 ) -> bool {
648 match v {
649 Some("unwind") => *slot = Some(PanicStrategy::Unwind),
650 Some("abort") => *slot = Some(PanicStrategy::Abort),
651 _ => return false,
652 }
653 true
654 }
655
parse_panic_strategy(slot: &mut PanicStrategy, v: Option<&str>) -> bool656 pub(crate) fn parse_panic_strategy(slot: &mut PanicStrategy, v: Option<&str>) -> bool {
657 match v {
658 Some("unwind") => *slot = PanicStrategy::Unwind,
659 Some("abort") => *slot = PanicStrategy::Abort,
660 _ => return false,
661 }
662 true
663 }
664
parse_oom_strategy(slot: &mut OomStrategy, v: Option<&str>) -> bool665 pub(crate) fn parse_oom_strategy(slot: &mut OomStrategy, v: Option<&str>) -> bool {
666 match v {
667 Some("panic") => *slot = OomStrategy::Panic,
668 Some("abort") => *slot = OomStrategy::Abort,
669 _ => return false,
670 }
671 true
672 }
673
parse_relro_level(slot: &mut Option<RelroLevel>, v: Option<&str>) -> bool674 pub(crate) fn parse_relro_level(slot: &mut Option<RelroLevel>, v: Option<&str>) -> bool {
675 match v {
676 Some(s) => match s.parse::<RelroLevel>() {
677 Ok(level) => *slot = Some(level),
678 _ => return false,
679 },
680 _ => return false,
681 }
682 true
683 }
684
parse_sanitizers(slot: &mut SanitizerSet, v: Option<&str>) -> bool685 pub(crate) fn parse_sanitizers(slot: &mut SanitizerSet, v: Option<&str>) -> bool {
686 if let Some(v) = v {
687 for s in v.split(',') {
688 *slot |= match s {
689 "address" => SanitizerSet::ADDRESS,
690 "cfi" => SanitizerSet::CFI,
691 "kcfi" => SanitizerSet::KCFI,
692 "kernel-address" => SanitizerSet::KERNELADDRESS,
693 "leak" => SanitizerSet::LEAK,
694 "memory" => SanitizerSet::MEMORY,
695 "memtag" => SanitizerSet::MEMTAG,
696 "shadow-call-stack" => SanitizerSet::SHADOWCALLSTACK,
697 "thread" => SanitizerSet::THREAD,
698 "hwaddress" => SanitizerSet::HWADDRESS,
699 "safestack" => SanitizerSet::SAFESTACK,
700 _ => return false,
701 }
702 }
703 true
704 } else {
705 false
706 }
707 }
708
parse_sanitizer_memory_track_origins(slot: &mut usize, v: Option<&str>) -> bool709 pub(crate) fn parse_sanitizer_memory_track_origins(slot: &mut usize, v: Option<&str>) -> bool {
710 match v {
711 Some("2") | None => {
712 *slot = 2;
713 true
714 }
715 Some("1") => {
716 *slot = 1;
717 true
718 }
719 Some("0") => {
720 *slot = 0;
721 true
722 }
723 Some(_) => false,
724 }
725 }
726
parse_strip(slot: &mut Strip, v: Option<&str>) -> bool727 pub(crate) fn parse_strip(slot: &mut Strip, v: Option<&str>) -> bool {
728 match v {
729 Some("none") => *slot = Strip::None,
730 Some("debuginfo") => *slot = Strip::Debuginfo,
731 Some("symbols") => *slot = Strip::Symbols,
732 _ => return false,
733 }
734 true
735 }
736
parse_cfguard(slot: &mut CFGuard, v: Option<&str>) -> bool737 pub(crate) fn parse_cfguard(slot: &mut CFGuard, v: Option<&str>) -> bool {
738 if v.is_some() {
739 let mut bool_arg = None;
740 if parse_opt_bool(&mut bool_arg, v) {
741 *slot = if bool_arg.unwrap() { CFGuard::Checks } else { CFGuard::Disabled };
742 return true;
743 }
744 }
745
746 *slot = match v {
747 None => CFGuard::Checks,
748 Some("checks") => CFGuard::Checks,
749 Some("nochecks") => CFGuard::NoChecks,
750 Some(_) => return false,
751 };
752 true
753 }
754
parse_cfprotection(slot: &mut CFProtection, v: Option<&str>) -> bool755 pub(crate) fn parse_cfprotection(slot: &mut CFProtection, v: Option<&str>) -> bool {
756 if v.is_some() {
757 let mut bool_arg = None;
758 if parse_opt_bool(&mut bool_arg, v) {
759 *slot = if bool_arg.unwrap() { CFProtection::Full } else { CFProtection::None };
760 return true;
761 }
762 }
763
764 *slot = match v {
765 None | Some("none") => CFProtection::None,
766 Some("branch") => CFProtection::Branch,
767 Some("return") => CFProtection::Return,
768 Some("full") => CFProtection::Full,
769 Some(_) => return false,
770 };
771 true
772 }
773
parse_debuginfo(slot: &mut DebugInfo, v: Option<&str>) -> bool774 pub(crate) fn parse_debuginfo(slot: &mut DebugInfo, v: Option<&str>) -> bool {
775 match v {
776 Some("0") | Some("none") => *slot = DebugInfo::None,
777 Some("line-directives-only") => *slot = DebugInfo::LineDirectivesOnly,
778 Some("line-tables-only") => *slot = DebugInfo::LineTablesOnly,
779 Some("1") | Some("limited") => *slot = DebugInfo::Limited,
780 Some("2") | Some("full") => *slot = DebugInfo::Full,
781 _ => return false,
782 }
783 true
784 }
785
parse_linker_flavor(slot: &mut Option<LinkerFlavorCli>, v: Option<&str>) -> bool786 pub(crate) fn parse_linker_flavor(slot: &mut Option<LinkerFlavorCli>, v: Option<&str>) -> bool {
787 match v.and_then(LinkerFlavorCli::from_str) {
788 Some(lf) => *slot = Some(lf),
789 _ => return false,
790 }
791 true
792 }
793
parse_optimization_fuel( slot: &mut Option<(String, u64)>, v: Option<&str>, ) -> bool794 pub(crate) fn parse_optimization_fuel(
795 slot: &mut Option<(String, u64)>,
796 v: Option<&str>,
797 ) -> bool {
798 match v {
799 None => false,
800 Some(s) => {
801 let parts = s.split('=').collect::<Vec<_>>();
802 if parts.len() != 2 {
803 return false;
804 }
805 let crate_name = parts[0].to_string();
806 let fuel = parts[1].parse::<u64>();
807 if fuel.is_err() {
808 return false;
809 }
810 *slot = Some((crate_name, fuel.unwrap()));
811 true
812 }
813 }
814 }
815
parse_unpretty(slot: &mut Option<String>, v: Option<&str>) -> bool816 pub(crate) fn parse_unpretty(slot: &mut Option<String>, v: Option<&str>) -> bool {
817 match v {
818 None => false,
819 Some(s) if s.split('=').count() <= 2 => {
820 *slot = Some(s.to_string());
821 true
822 }
823 _ => false,
824 }
825 }
826
parse_mir_spanview(slot: &mut Option<MirSpanview>, v: Option<&str>) -> bool827 pub(crate) fn parse_mir_spanview(slot: &mut Option<MirSpanview>, v: Option<&str>) -> bool {
828 if v.is_some() {
829 let mut bool_arg = None;
830 if parse_opt_bool(&mut bool_arg, v) {
831 *slot = bool_arg.unwrap().then_some(MirSpanview::Statement);
832 return true;
833 }
834 }
835
836 let Some(v) = v else {
837 *slot = Some(MirSpanview::Statement);
838 return true;
839 };
840
841 *slot = Some(match v.trim_end_matches('s') {
842 "statement" | "stmt" => MirSpanview::Statement,
843 "terminator" | "term" => MirSpanview::Terminator,
844 "block" | "basicblock" => MirSpanview::Block,
845 _ => return false,
846 });
847 true
848 }
849
parse_time_passes_format(slot: &mut TimePassesFormat, v: Option<&str>) -> bool850 pub(crate) fn parse_time_passes_format(slot: &mut TimePassesFormat, v: Option<&str>) -> bool {
851 match v {
852 None => true,
853 Some("json") => {
854 *slot = TimePassesFormat::Json;
855 true
856 }
857 Some("text") => {
858 *slot = TimePassesFormat::Text;
859 true
860 }
861 Some(_) => false,
862 }
863 }
864
parse_dump_mono_stats(slot: &mut DumpMonoStatsFormat, v: Option<&str>) -> bool865 pub(crate) fn parse_dump_mono_stats(slot: &mut DumpMonoStatsFormat, v: Option<&str>) -> bool {
866 match v {
867 None => true,
868 Some("json") => {
869 *slot = DumpMonoStatsFormat::Json;
870 true
871 }
872 Some("markdown") => {
873 *slot = DumpMonoStatsFormat::Markdown;
874 true
875 }
876 Some(_) => false,
877 }
878 }
879
parse_instrument_coverage( slot: &mut Option<InstrumentCoverage>, v: Option<&str>, ) -> bool880 pub(crate) fn parse_instrument_coverage(
881 slot: &mut Option<InstrumentCoverage>,
882 v: Option<&str>,
883 ) -> bool {
884 if v.is_some() {
885 let mut bool_arg = None;
886 if parse_opt_bool(&mut bool_arg, v) {
887 *slot = bool_arg.unwrap().then_some(InstrumentCoverage::All);
888 return true;
889 }
890 }
891
892 let Some(v) = v else {
893 *slot = Some(InstrumentCoverage::All);
894 return true;
895 };
896
897 *slot = Some(match v {
898 "all" => InstrumentCoverage::All,
899 "except-unused-generics" | "except_unused_generics" => {
900 InstrumentCoverage::ExceptUnusedGenerics
901 }
902 "except-unused-functions" | "except_unused_functions" => {
903 InstrumentCoverage::ExceptUnusedFunctions
904 }
905 "off" | "no" | "n" | "false" | "0" => InstrumentCoverage::Off,
906 _ => return false,
907 });
908 true
909 }
910
parse_instrument_xray( slot: &mut Option<InstrumentXRay>, v: Option<&str>, ) -> bool911 pub(crate) fn parse_instrument_xray(
912 slot: &mut Option<InstrumentXRay>,
913 v: Option<&str>,
914 ) -> bool {
915 if v.is_some() {
916 let mut bool_arg = None;
917 if parse_opt_bool(&mut bool_arg, v) {
918 *slot = if bool_arg.unwrap() { Some(InstrumentXRay::default()) } else { None };
919 return true;
920 }
921 }
922
923 let options = slot.get_or_insert_default();
924 let mut seen_always = false;
925 let mut seen_never = false;
926 let mut seen_ignore_loops = false;
927 let mut seen_instruction_threshold = false;
928 let mut seen_skip_entry = false;
929 let mut seen_skip_exit = false;
930 for option in v.into_iter().flat_map(|v| v.split(',')) {
931 match option {
932 "always" if !seen_always && !seen_never => {
933 options.always = true;
934 options.never = false;
935 seen_always = true;
936 }
937 "never" if !seen_never && !seen_always => {
938 options.never = true;
939 options.always = false;
940 seen_never = true;
941 }
942 "ignore-loops" if !seen_ignore_loops => {
943 options.ignore_loops = true;
944 seen_ignore_loops = true;
945 }
946 option
947 if option.starts_with("instruction-threshold")
948 && !seen_instruction_threshold =>
949 {
950 let Some(("instruction-threshold", n)) = option.split_once('=') else {
951 return false;
952 };
953 match n.parse() {
954 Ok(n) => options.instruction_threshold = Some(n),
955 Err(_) => return false,
956 }
957 seen_instruction_threshold = true;
958 }
959 "skip-entry" if !seen_skip_entry => {
960 options.skip_entry = true;
961 seen_skip_entry = true;
962 }
963 "skip-exit" if !seen_skip_exit => {
964 options.skip_exit = true;
965 seen_skip_exit = true;
966 }
967 _ => return false,
968 }
969 }
970 true
971 }
972
parse_treat_err_as_bug(slot: &mut Option<NonZeroUsize>, v: Option<&str>) -> bool973 pub(crate) fn parse_treat_err_as_bug(slot: &mut Option<NonZeroUsize>, v: Option<&str>) -> bool {
974 match v {
975 Some(s) => {
976 *slot = s.parse().ok();
977 slot.is_some()
978 }
979 None => {
980 *slot = NonZeroUsize::new(1);
981 true
982 }
983 }
984 }
985
parse_trait_solver(slot: &mut TraitSolver, v: Option<&str>) -> bool986 pub(crate) fn parse_trait_solver(slot: &mut TraitSolver, v: Option<&str>) -> bool {
987 match v {
988 Some("classic") => *slot = TraitSolver::Classic,
989 Some("next") => *slot = TraitSolver::Next,
990 Some("next-coherence") => *slot = TraitSolver::NextCoherence,
991 // default trait solver is subject to change..
992 Some("default") => *slot = TraitSolver::Classic,
993 _ => return false,
994 }
995 true
996 }
997
parse_lto(slot: &mut LtoCli, v: Option<&str>) -> bool998 pub(crate) fn parse_lto(slot: &mut LtoCli, v: Option<&str>) -> bool {
999 if v.is_some() {
1000 let mut bool_arg = None;
1001 if parse_opt_bool(&mut bool_arg, v) {
1002 *slot = if bool_arg.unwrap() { LtoCli::Yes } else { LtoCli::No };
1003 return true;
1004 }
1005 }
1006
1007 *slot = match v {
1008 None => LtoCli::NoParam,
1009 Some("thin") => LtoCli::Thin,
1010 Some("fat") => LtoCli::Fat,
1011 Some(_) => return false,
1012 };
1013 true
1014 }
1015
parse_linker_plugin_lto(slot: &mut LinkerPluginLto, v: Option<&str>) -> bool1016 pub(crate) fn parse_linker_plugin_lto(slot: &mut LinkerPluginLto, v: Option<&str>) -> bool {
1017 if v.is_some() {
1018 let mut bool_arg = None;
1019 if parse_opt_bool(&mut bool_arg, v) {
1020 *slot = if bool_arg.unwrap() {
1021 LinkerPluginLto::LinkerPluginAuto
1022 } else {
1023 LinkerPluginLto::Disabled
1024 };
1025 return true;
1026 }
1027 }
1028
1029 *slot = match v {
1030 None => LinkerPluginLto::LinkerPluginAuto,
1031 Some(path) => LinkerPluginLto::LinkerPlugin(PathBuf::from(path)),
1032 };
1033 true
1034 }
1035
parse_switch_with_opt_path( slot: &mut SwitchWithOptPath, v: Option<&str>, ) -> bool1036 pub(crate) fn parse_switch_with_opt_path(
1037 slot: &mut SwitchWithOptPath,
1038 v: Option<&str>,
1039 ) -> bool {
1040 *slot = match v {
1041 None => SwitchWithOptPath::Enabled(None),
1042 Some(path) => SwitchWithOptPath::Enabled(Some(PathBuf::from(path))),
1043 };
1044 true
1045 }
1046
parse_merge_functions( slot: &mut Option<MergeFunctions>, v: Option<&str>, ) -> bool1047 pub(crate) fn parse_merge_functions(
1048 slot: &mut Option<MergeFunctions>,
1049 v: Option<&str>,
1050 ) -> bool {
1051 match v.and_then(|s| MergeFunctions::from_str(s).ok()) {
1052 Some(mergefunc) => *slot = Some(mergefunc),
1053 _ => return false,
1054 }
1055 true
1056 }
1057
parse_relocation_model(slot: &mut Option<RelocModel>, v: Option<&str>) -> bool1058 pub(crate) fn parse_relocation_model(slot: &mut Option<RelocModel>, v: Option<&str>) -> bool {
1059 match v.and_then(|s| RelocModel::from_str(s).ok()) {
1060 Some(relocation_model) => *slot = Some(relocation_model),
1061 None if v == Some("default") => *slot = None,
1062 _ => return false,
1063 }
1064 true
1065 }
1066
parse_code_model(slot: &mut Option<CodeModel>, v: Option<&str>) -> bool1067 pub(crate) fn parse_code_model(slot: &mut Option<CodeModel>, v: Option<&str>) -> bool {
1068 match v.and_then(|s| CodeModel::from_str(s).ok()) {
1069 Some(code_model) => *slot = Some(code_model),
1070 _ => return false,
1071 }
1072 true
1073 }
1074
parse_tls_model(slot: &mut Option<TlsModel>, v: Option<&str>) -> bool1075 pub(crate) fn parse_tls_model(slot: &mut Option<TlsModel>, v: Option<&str>) -> bool {
1076 match v.and_then(|s| TlsModel::from_str(s).ok()) {
1077 Some(tls_model) => *slot = Some(tls_model),
1078 _ => return false,
1079 }
1080 true
1081 }
1082
parse_terminal_url(slot: &mut TerminalUrl, v: Option<&str>) -> bool1083 pub(crate) fn parse_terminal_url(slot: &mut TerminalUrl, v: Option<&str>) -> bool {
1084 *slot = match v {
1085 Some("on" | "" | "yes" | "y") | None => TerminalUrl::Yes,
1086 Some("off" | "no" | "n") => TerminalUrl::No,
1087 Some("auto") => TerminalUrl::Auto,
1088 _ => return false,
1089 };
1090 true
1091 }
1092
parse_symbol_mangling_version( slot: &mut Option<SymbolManglingVersion>, v: Option<&str>, ) -> bool1093 pub(crate) fn parse_symbol_mangling_version(
1094 slot: &mut Option<SymbolManglingVersion>,
1095 v: Option<&str>,
1096 ) -> bool {
1097 *slot = match v {
1098 Some("legacy") => Some(SymbolManglingVersion::Legacy),
1099 Some("v0") => Some(SymbolManglingVersion::V0),
1100 _ => return false,
1101 };
1102 true
1103 }
1104
parse_src_file_hash( slot: &mut Option<SourceFileHashAlgorithm>, v: Option<&str>, ) -> bool1105 pub(crate) fn parse_src_file_hash(
1106 slot: &mut Option<SourceFileHashAlgorithm>,
1107 v: Option<&str>,
1108 ) -> bool {
1109 match v.and_then(|s| SourceFileHashAlgorithm::from_str(s).ok()) {
1110 Some(hash_kind) => *slot = Some(hash_kind),
1111 _ => return false,
1112 }
1113 true
1114 }
1115
parse_target_feature(slot: &mut String, v: Option<&str>) -> bool1116 pub(crate) fn parse_target_feature(slot: &mut String, v: Option<&str>) -> bool {
1117 match v {
1118 Some(s) => {
1119 if !slot.is_empty() {
1120 slot.push(',');
1121 }
1122 slot.push_str(s);
1123 true
1124 }
1125 None => false,
1126 }
1127 }
1128
parse_link_self_contained(slot: &mut LinkSelfContained, v: Option<&str>) -> bool1129 pub(crate) fn parse_link_self_contained(slot: &mut LinkSelfContained, v: Option<&str>) -> bool {
1130 // Whenever `-C link-self-contained` is passed without a value, it's an opt-in
1131 // just like `parse_opt_bool`, the historical value of this flag.
1132 //
1133 // 1. Parse historical single bool values
1134 let s = v.unwrap_or("y");
1135 match s {
1136 "y" | "yes" | "on" => {
1137 slot.set_all_explicitly(true);
1138 return true;
1139 }
1140 "n" | "no" | "off" => {
1141 slot.set_all_explicitly(false);
1142 return true;
1143 }
1144 _ => {}
1145 }
1146
1147 // 2. Parse a list of enabled and disabled components.
1148 for comp in s.split(",") {
1149 if slot.handle_cli_component(comp).is_err() {
1150 return false;
1151 }
1152 }
1153
1154 true
1155 }
1156
parse_wasi_exec_model(slot: &mut Option<WasiExecModel>, v: Option<&str>) -> bool1157 pub(crate) fn parse_wasi_exec_model(slot: &mut Option<WasiExecModel>, v: Option<&str>) -> bool {
1158 match v {
1159 Some("command") => *slot = Some(WasiExecModel::Command),
1160 Some("reactor") => *slot = Some(WasiExecModel::Reactor),
1161 _ => return false,
1162 }
1163 true
1164 }
1165
parse_split_debuginfo( slot: &mut Option<SplitDebuginfo>, v: Option<&str>, ) -> bool1166 pub(crate) fn parse_split_debuginfo(
1167 slot: &mut Option<SplitDebuginfo>,
1168 v: Option<&str>,
1169 ) -> bool {
1170 match v.and_then(|s| SplitDebuginfo::from_str(s).ok()) {
1171 Some(e) => *slot = Some(e),
1172 _ => return false,
1173 }
1174 true
1175 }
1176
parse_split_dwarf_kind(slot: &mut SplitDwarfKind, v: Option<&str>) -> bool1177 pub(crate) fn parse_split_dwarf_kind(slot: &mut SplitDwarfKind, v: Option<&str>) -> bool {
1178 match v.and_then(|s| SplitDwarfKind::from_str(s).ok()) {
1179 Some(e) => *slot = e,
1180 _ => return false,
1181 }
1182 true
1183 }
1184
parse_gcc_ld(slot: &mut Option<LdImpl>, v: Option<&str>) -> bool1185 pub(crate) fn parse_gcc_ld(slot: &mut Option<LdImpl>, v: Option<&str>) -> bool {
1186 match v {
1187 None => *slot = None,
1188 Some("lld") => *slot = Some(LdImpl::Lld),
1189 _ => return false,
1190 }
1191 true
1192 }
1193
parse_stack_protector(slot: &mut StackProtector, v: Option<&str>) -> bool1194 pub(crate) fn parse_stack_protector(slot: &mut StackProtector, v: Option<&str>) -> bool {
1195 match v.and_then(|s| StackProtector::from_str(s).ok()) {
1196 Some(ssp) => *slot = ssp,
1197 _ => return false,
1198 }
1199 true
1200 }
1201
parse_branch_protection( slot: &mut Option<BranchProtection>, v: Option<&str>, ) -> bool1202 pub(crate) fn parse_branch_protection(
1203 slot: &mut Option<BranchProtection>,
1204 v: Option<&str>,
1205 ) -> bool {
1206 match v {
1207 Some(s) => {
1208 let slot = slot.get_or_insert_default();
1209 for opt in s.split(',') {
1210 match opt {
1211 "bti" => slot.bti = true,
1212 "pac-ret" if slot.pac_ret.is_none() => {
1213 slot.pac_ret = Some(PacRet { leaf: false, key: PAuthKey::A })
1214 }
1215 "leaf" => match slot.pac_ret.as_mut() {
1216 Some(pac) => pac.leaf = true,
1217 _ => return false,
1218 },
1219 "b-key" => match slot.pac_ret.as_mut() {
1220 Some(pac) => pac.key = PAuthKey::B,
1221 _ => return false,
1222 },
1223 _ => return false,
1224 };
1225 }
1226 }
1227 _ => return false,
1228 }
1229 true
1230 }
1231
parse_proc_macro_execution_strategy( slot: &mut ProcMacroExecutionStrategy, v: Option<&str>, ) -> bool1232 pub(crate) fn parse_proc_macro_execution_strategy(
1233 slot: &mut ProcMacroExecutionStrategy,
1234 v: Option<&str>,
1235 ) -> bool {
1236 *slot = match v {
1237 Some("same-thread") => ProcMacroExecutionStrategy::SameThread,
1238 Some("cross-thread") => ProcMacroExecutionStrategy::CrossThread,
1239 _ => return false,
1240 };
1241 true
1242 }
1243
parse_dump_solver_proof_tree( slot: &mut DumpSolverProofTree, v: Option<&str>, ) -> bool1244 pub(crate) fn parse_dump_solver_proof_tree(
1245 slot: &mut DumpSolverProofTree,
1246 v: Option<&str>,
1247 ) -> bool {
1248 match v {
1249 None | Some("always") => *slot = DumpSolverProofTree::Always,
1250 Some("never") => *slot = DumpSolverProofTree::Never,
1251 Some("on-error") => *slot = DumpSolverProofTree::OnError,
1252 _ => return false,
1253 };
1254 true
1255 }
1256 }
1257
1258 options! {
1259 CodegenOptions, CG_OPTIONS, cgopts, "C", "codegen",
1260
1261 // If you add a new option, please update:
1262 // - compiler/rustc_interface/src/tests.rs
1263 // - src/doc/rustc/src/codegen-options/index.md
1264
1265 // tidy-alphabetical-start
1266 ar: String = (String::new(), parse_string, [UNTRACKED],
1267 "this option is deprecated and does nothing"),
1268 #[rustc_lint_opt_deny_field_access("use `Session::code_model` instead of this field")]
1269 code_model: Option<CodeModel> = (None, parse_code_model, [TRACKED],
1270 "choose the code model to use (`rustc --print code-models` for details)"),
1271 codegen_units: Option<usize> = (None, parse_opt_number, [UNTRACKED],
1272 "divide crate into N units to optimize in parallel"),
1273 control_flow_guard: CFGuard = (CFGuard::Disabled, parse_cfguard, [TRACKED],
1274 "use Windows Control Flow Guard (default: no)"),
1275 debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
1276 "explicitly enable the `cfg(debug_assertions)` directive"),
1277 debuginfo: DebugInfo = (DebugInfo::None, parse_debuginfo, [TRACKED],
1278 "debug info emission level (0-2, none, line-directives-only, \
1279 line-tables-only, limited, or full; default: 0)"),
1280 default_linker_libraries: bool = (false, parse_bool, [UNTRACKED],
1281 "allow the linker to link its default libraries (default: no)"),
1282 dlltool: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
1283 "import library generation tool (ignored except when targeting windows-gnu)"),
1284 embed_bitcode: bool = (true, parse_bool, [TRACKED],
1285 "emit bitcode in rlibs (default: yes)"),
1286 extra_filename: String = (String::new(), parse_string, [UNTRACKED],
1287 "extra data to put in each output filename"),
1288 force_frame_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
1289 "force use of the frame pointers"),
1290 #[rustc_lint_opt_deny_field_access("use `Session::must_emit_unwind_tables` instead of this field")]
1291 force_unwind_tables: Option<bool> = (None, parse_opt_bool, [TRACKED],
1292 "force use of unwind tables"),
1293 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1294 "enable incremental compilation"),
1295 inline_threshold: Option<u32> = (None, parse_opt_number, [TRACKED],
1296 "set the threshold for inlining a function"),
1297 #[rustc_lint_opt_deny_field_access("use `Session::instrument_coverage` instead of this field")]
1298 instrument_coverage: Option<InstrumentCoverage> = (None, parse_instrument_coverage, [TRACKED],
1299 "instrument the generated code to support LLVM source-based code coverage \
1300 reports (note, the compiler build config must include `profiler = true`); \
1301 implies `-C symbol-mangling-version=v0`. Optional values are:
1302 `=all` (implicit value)
1303 `=except-unused-generics`
1304 `=except-unused-functions`
1305 `=off` (default)"),
1306 link_arg: (/* redirected to link_args */) = ((), parse_string_push, [UNTRACKED],
1307 "a single extra argument to append to the linker invocation (can be used several times)"),
1308 link_args: Vec<String> = (Vec::new(), parse_list, [UNTRACKED],
1309 "extra arguments to append to the linker invocation (space separated)"),
1310 #[rustc_lint_opt_deny_field_access("use `Session::link_dead_code` instead of this field")]
1311 link_dead_code: Option<bool> = (None, parse_opt_bool, [TRACKED],
1312 "keep dead code at link time (useful for code coverage) (default: no)"),
1313 link_self_contained: LinkSelfContained = (LinkSelfContained::default(), parse_link_self_contained, [UNTRACKED],
1314 "control whether to link Rust provided C objects/libraries or rely
1315 on a C toolchain or linker installed in the system"),
1316 linker: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
1317 "system linker to link outputs with"),
1318 linker_flavor: Option<LinkerFlavorCli> = (None, parse_linker_flavor, [UNTRACKED],
1319 "linker flavor"),
1320 linker_plugin_lto: LinkerPluginLto = (LinkerPluginLto::Disabled,
1321 parse_linker_plugin_lto, [TRACKED],
1322 "generate build artifacts that are compatible with linker-based LTO"),
1323 llvm_args: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1324 "a list of arguments to pass to LLVM (space separated)"),
1325 #[rustc_lint_opt_deny_field_access("use `Session::lto` instead of this field")]
1326 lto: LtoCli = (LtoCli::Unspecified, parse_lto, [TRACKED],
1327 "perform LLVM link-time optimizations"),
1328 metadata: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1329 "metadata to mangle symbol names with"),
1330 no_prepopulate_passes: bool = (false, parse_no_flag, [TRACKED],
1331 "give an empty list of passes to the pass manager"),
1332 no_redzone: Option<bool> = (None, parse_opt_bool, [TRACKED],
1333 "disable the use of the redzone"),
1334 no_stack_check: bool = (false, parse_no_flag, [UNTRACKED],
1335 "this option is deprecated and does nothing"),
1336 no_vectorize_loops: bool = (false, parse_no_flag, [TRACKED],
1337 "disable loop vectorization optimization passes"),
1338 no_vectorize_slp: bool = (false, parse_no_flag, [TRACKED],
1339 "disable LLVM's SLP vectorization pass"),
1340 opt_level: String = ("0".to_string(), parse_string, [TRACKED],
1341 "optimization level (0-3, s, or z; default: 0)"),
1342 #[rustc_lint_opt_deny_field_access("use `Session::overflow_checks` instead of this field")]
1343 overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1344 "use overflow checks for integer arithmetic"),
1345 #[rustc_lint_opt_deny_field_access("use `Session::panic_strategy` instead of this field")]
1346 panic: Option<PanicStrategy> = (None, parse_opt_panic_strategy, [TRACKED],
1347 "panic strategy to compile crate with"),
1348 passes: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1349 "a list of extra LLVM passes to run (space separated)"),
1350 prefer_dynamic: bool = (false, parse_bool, [TRACKED],
1351 "prefer dynamic linking to static linking (default: no)"),
1352 profile_generate: SwitchWithOptPath = (SwitchWithOptPath::Disabled,
1353 parse_switch_with_opt_path, [TRACKED],
1354 "compile the program with profiling instrumentation"),
1355 profile_use: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
1356 "use the given `.profdata` file for profile-guided optimization"),
1357 #[rustc_lint_opt_deny_field_access("use `Session::relocation_model` instead of this field")]
1358 relocation_model: Option<RelocModel> = (None, parse_relocation_model, [TRACKED],
1359 "control generation of position-independent code (PIC) \
1360 (`rustc --print relocation-models` for details)"),
1361 relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
1362 "choose which RELRO level to use"),
1363 remark: Passes = (Passes::Some(Vec::new()), parse_passes, [UNTRACKED],
1364 "output remarks for these optimization passes (space separated, or \"all\")"),
1365 rpath: bool = (false, parse_bool, [UNTRACKED],
1366 "set rpath values in libs/exes (default: no)"),
1367 save_temps: bool = (false, parse_bool, [UNTRACKED],
1368 "save all temporary output files during compilation (default: no)"),
1369 soft_float: bool = (false, parse_bool, [TRACKED],
1370 "use soft float ABI (*eabihf targets only) (default: no)"),
1371 #[rustc_lint_opt_deny_field_access("use `Session::split_debuginfo` instead of this field")]
1372 split_debuginfo: Option<SplitDebuginfo> = (None, parse_split_debuginfo, [TRACKED],
1373 "how to handle split-debuginfo, a platform-specific option"),
1374 strip: Strip = (Strip::None, parse_strip, [UNTRACKED],
1375 "tell the linker which information to strip (`none` (default), `debuginfo` or `symbols`)"),
1376 symbol_mangling_version: Option<SymbolManglingVersion> = (None,
1377 parse_symbol_mangling_version, [TRACKED],
1378 "which mangling version to use for symbol names ('legacy' (default) or 'v0')"),
1379 target_cpu: Option<String> = (None, parse_opt_string, [TRACKED],
1380 "select target processor (`rustc --print target-cpus` for details)"),
1381 target_feature: String = (String::new(), parse_target_feature, [TRACKED],
1382 "target specific attributes. (`rustc --print target-features` for details). \
1383 This feature is unsafe."),
1384 // tidy-alphabetical-end
1385
1386 // If you add a new option, please update:
1387 // - compiler/rustc_interface/src/tests.rs
1388 // - src/doc/rustc/src/codegen-options/index.md
1389 }
1390
1391 options! {
1392 UnstableOptions, Z_OPTIONS, dbopts, "Z", "unstable",
1393
1394 // If you add a new option, please update:
1395 // - compiler/rustc_interface/src/tests.rs
1396 // - src/doc/unstable-book/src/compiler-flags
1397
1398 // tidy-alphabetical-start
1399 allow_features: Option<Vec<String>> = (None, parse_opt_comma_list, [TRACKED],
1400 "only allow the listed language features to be enabled in code (comma separated)"),
1401 always_encode_mir: bool = (false, parse_bool, [TRACKED],
1402 "encode MIR of all functions into the crate metadata (default: no)"),
1403 asm_comments: bool = (false, parse_bool, [TRACKED],
1404 "generate comments into the assembly (may change behavior) (default: no)"),
1405 assert_incr_state: Option<String> = (None, parse_opt_string, [UNTRACKED],
1406 "assert that the incremental cache is in given state: \
1407 either `loaded` or `not-loaded`."),
1408 assume_incomplete_release: bool = (false, parse_bool, [TRACKED],
1409 "make cfg(version) treat the current version as incomplete (default: no)"),
1410 #[rustc_lint_opt_deny_field_access("use `Session::binary_dep_depinfo` instead of this field")]
1411 binary_dep_depinfo: bool = (false, parse_bool, [TRACKED],
1412 "include artifacts (sysroot, crate dependencies) used during compilation in dep-info \
1413 (default: no)"),
1414 box_noalias: bool = (true, parse_bool, [TRACKED],
1415 "emit noalias metadata for box (default: yes)"),
1416 branch_protection: Option<BranchProtection> = (None, parse_branch_protection, [TRACKED],
1417 "set options for branch target identification and pointer authentication on AArch64"),
1418 cf_protection: CFProtection = (CFProtection::None, parse_cfprotection, [TRACKED],
1419 "instrument control-flow architecture protection"),
1420 codegen_backend: Option<String> = (None, parse_opt_string, [TRACKED],
1421 "the backend to use"),
1422 combine_cgu: bool = (false, parse_bool, [TRACKED],
1423 "combine CGUs into a single one"),
1424 crate_attr: Vec<String> = (Vec::new(), parse_string_push, [TRACKED],
1425 "inject the given attribute in the crate"),
1426 debug_info_for_profiling: bool = (false, parse_bool, [TRACKED],
1427 "emit discriminators and other data necessary for AutoFDO"),
1428 debug_macros: bool = (false, parse_bool, [TRACKED],
1429 "emit line numbers debug info inside macros (default: no)"),
1430 deduplicate_diagnostics: bool = (true, parse_bool, [UNTRACKED],
1431 "deduplicate identical diagnostics (default: yes)"),
1432 dep_info_omit_d_target: bool = (false, parse_bool, [TRACKED],
1433 "in dep-info output, omit targets for tracking dependencies of the dep-info files \
1434 themselves (default: no)"),
1435 dep_tasks: bool = (false, parse_bool, [UNTRACKED],
1436 "print tasks that execute and the color their dep node gets (requires debug build) \
1437 (default: no)"),
1438 diagnostic_width: Option<usize> = (None, parse_opt_number, [UNTRACKED],
1439 "set the current output width for diagnostic truncation"),
1440 dont_buffer_diagnostics: bool = (false, parse_bool, [UNTRACKED],
1441 "emit diagnostics rather than buffering (breaks NLL error downgrading, sorting) \
1442 (default: no)"),
1443 drop_tracking: bool = (false, parse_bool, [TRACKED],
1444 "enables drop tracking in generators (default: no)"),
1445 drop_tracking_mir: bool = (false, parse_bool, [TRACKED],
1446 "enables drop tracking on MIR in generators (default: no)"),
1447 dual_proc_macros: bool = (false, parse_bool, [TRACKED],
1448 "load proc macros for both target and host, but only link to the target (default: no)"),
1449 dump_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1450 "dump the dependency graph to $RUST_DEP_GRAPH (default: /tmp/dep_graph.gv) \
1451 (default: no)"),
1452 dump_drop_tracking_cfg: Option<String> = (None, parse_opt_string, [UNTRACKED],
1453 "dump drop-tracking control-flow graph as a `.dot` file (default: no)"),
1454 dump_mir: Option<String> = (None, parse_opt_string, [UNTRACKED],
1455 "dump MIR state to file.
1456 `val` is used to select which passes and functions to dump. For example:
1457 `all` matches all passes and functions,
1458 `foo` matches all passes for functions whose name contains 'foo',
1459 `foo & ConstProp` only the 'ConstProp' pass for function names containing 'foo',
1460 `foo | bar` all passes for function names containing 'foo' or 'bar'."),
1461 dump_mir_dataflow: bool = (false, parse_bool, [UNTRACKED],
1462 "in addition to `.mir` files, create graphviz `.dot` files with dataflow results \
1463 (default: no)"),
1464 dump_mir_dir: String = ("mir_dump".to_string(), parse_string, [UNTRACKED],
1465 "the directory the MIR is dumped into (default: `mir_dump`)"),
1466 dump_mir_exclude_pass_number: bool = (false, parse_bool, [UNTRACKED],
1467 "exclude the pass number when dumping MIR (used in tests) (default: no)"),
1468 dump_mir_graphviz: bool = (false, parse_bool, [UNTRACKED],
1469 "in addition to `.mir` files, create graphviz `.dot` files (and with \
1470 `-Z instrument-coverage`, also create a `.dot` file for the MIR-derived \
1471 coverage graph) (default: no)"),
1472 dump_mir_spanview: Option<MirSpanview> = (None, parse_mir_spanview, [UNTRACKED],
1473 "in addition to `.mir` files, create `.html` files to view spans for \
1474 all `statement`s (including terminators), only `terminator` spans, or \
1475 computed `block` spans (one span encompassing a block's terminator and \
1476 all statements). If `-Z instrument-coverage` is also enabled, create \
1477 an additional `.html` file showing the computed coverage spans."),
1478 dump_mono_stats: SwitchWithOptPath = (SwitchWithOptPath::Disabled,
1479 parse_switch_with_opt_path, [UNTRACKED],
1480 "output statistics about monomorphization collection"),
1481 dump_mono_stats_format: DumpMonoStatsFormat = (DumpMonoStatsFormat::Markdown, parse_dump_mono_stats, [UNTRACKED],
1482 "the format to use for -Z dump-mono-stats (`markdown` (default) or `json`)"),
1483 dump_solver_proof_tree: DumpSolverProofTree = (DumpSolverProofTree::Never, parse_dump_solver_proof_tree, [UNTRACKED],
1484 "dump a proof tree for every goal evaluated by the new trait solver. If the flag is specified without any options after it
1485 then it defaults to `always`. If the flag is not specified at all it defaults to `on-request`."),
1486 dump_solver_proof_tree_use_cache: Option<bool> = (None, parse_opt_bool, [UNTRACKED],
1487 "determines whether dumped proof trees use the global cache"),
1488 dwarf_version: Option<u32> = (None, parse_opt_number, [TRACKED],
1489 "version of DWARF debug information to emit (default: 2 or 4, depending on platform)"),
1490 dylib_lto: bool = (false, parse_bool, [UNTRACKED],
1491 "enables LTO for dylib crate type"),
1492 emit_stack_sizes: bool = (false, parse_bool, [UNTRACKED],
1493 "emit a section containing stack size metadata (default: no)"),
1494 emit_thin_lto: bool = (true, parse_bool, [TRACKED],
1495 "emit the bc module with thin LTO info (default: yes)"),
1496 export_executable_symbols: bool = (false, parse_bool, [TRACKED],
1497 "export symbols from executables, as if they were dynamic libraries"),
1498 extra_const_ub_checks: bool = (false, parse_bool, [TRACKED],
1499 "turns on more checks to detect const UB, which can be slow (default: no)"),
1500 #[rustc_lint_opt_deny_field_access("use `Session::fewer_names` instead of this field")]
1501 fewer_names: Option<bool> = (None, parse_opt_bool, [TRACKED],
1502 "reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR) \
1503 (default: no)"),
1504 flatten_format_args: bool = (true, parse_bool, [TRACKED],
1505 "flatten nested format_args!() and literals into a simplified format_args!() call \
1506 (default: yes)"),
1507 force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
1508 "force all crates to be `rustc_private` unstable (default: no)"),
1509 fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED],
1510 "set the optimization fuel quota for a crate"),
1511 function_sections: Option<bool> = (None, parse_opt_bool, [TRACKED],
1512 "whether each function should go in its own section"),
1513 future_incompat_test: bool = (false, parse_bool, [UNTRACKED],
1514 "forces all lints to be future incompatible, used for internal testing (default: no)"),
1515 gcc_ld: Option<LdImpl> = (None, parse_gcc_ld, [TRACKED], "implementation of ld used by cc"),
1516 graphviz_dark_mode: bool = (false, parse_bool, [UNTRACKED],
1517 "use dark-themed colors in graphviz output (default: no)"),
1518 graphviz_font: String = ("Courier, monospace".to_string(), parse_string, [UNTRACKED],
1519 "use the given `fontname` in graphviz output; can be overridden by setting \
1520 environment variable `RUSTC_GRAPHVIZ_FONT` (default: `Courier, monospace`)"),
1521 hir_stats: bool = (false, parse_bool, [UNTRACKED],
1522 "print some statistics about AST and HIR (default: no)"),
1523 human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],
1524 "generate human-readable, predictable names for codegen units (default: no)"),
1525 identify_regions: bool = (false, parse_bool, [UNTRACKED],
1526 "display unnamed regions as `'<id>`, using a non-ident unique id (default: no)"),
1527 incremental_ignore_spans: bool = (false, parse_bool, [TRACKED],
1528 "ignore spans during ICH computation -- used for testing (default: no)"),
1529 incremental_info: bool = (false, parse_bool, [UNTRACKED],
1530 "print high-level information about incremental reuse (or the lack thereof) \
1531 (default: no)"),
1532 #[rustc_lint_opt_deny_field_access("use `Session::incremental_relative_spans` instead of this field")]
1533 incremental_relative_spans: bool = (false, parse_bool, [TRACKED],
1534 "hash spans relative to their parent item for incr. comp. (default: no)"),
1535 incremental_verify_ich: bool = (false, parse_bool, [UNTRACKED],
1536 "verify incr. comp. hashes of green query instances (default: no)"),
1537 inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
1538 "control whether `#[inline]` functions are in all CGUs"),
1539 inline_llvm: bool = (true, parse_bool, [TRACKED],
1540 "enable LLVM inlining (default: yes)"),
1541 inline_mir: Option<bool> = (None, parse_opt_bool, [TRACKED],
1542 "enable MIR inlining (default: no)"),
1543 inline_mir_hint_threshold: Option<usize> = (None, parse_opt_number, [TRACKED],
1544 "inlining threshold for functions with inline hint (default: 100)"),
1545 inline_mir_threshold: Option<usize> = (None, parse_opt_number, [TRACKED],
1546 "a default MIR inlining threshold (default: 50)"),
1547 input_stats: bool = (false, parse_bool, [UNTRACKED],
1548 "gather statistics about the input (default: no)"),
1549 #[rustc_lint_opt_deny_field_access("use `Session::instrument_coverage` instead of this field")]
1550 instrument_coverage: Option<InstrumentCoverage> = (None, parse_instrument_coverage, [TRACKED],
1551 "instrument the generated code to support LLVM source-based code coverage \
1552 reports (note, the compiler build config must include `profiler = true`); \
1553 implies `-C symbol-mangling-version=v0`. Optional values are:
1554 `=all` (implicit value)
1555 `=except-unused-generics`
1556 `=except-unused-functions`
1557 `=off` (default)"),
1558 instrument_mcount: bool = (false, parse_bool, [TRACKED],
1559 "insert function instrument code for mcount-based tracing (default: no)"),
1560 instrument_xray: Option<InstrumentXRay> = (None, parse_instrument_xray, [TRACKED],
1561 "insert function instrument code for XRay-based tracing (default: no)
1562 Optional extra settings:
1563 `=always`
1564 `=never`
1565 `=ignore-loops`
1566 `=instruction-threshold=N`
1567 `=skip-entry`
1568 `=skip-exit`
1569 Multiple options can be combined with commas."),
1570 keep_hygiene_data: bool = (false, parse_bool, [UNTRACKED],
1571 "keep hygiene data after analysis (default: no)"),
1572 layout_seed: Option<u64> = (None, parse_opt_number, [TRACKED],
1573 "seed layout randomization"),
1574 link_directives: bool = (true, parse_bool, [TRACKED],
1575 "honor #[link] directives in the compiled crate (default: yes)"),
1576 link_native_libraries: bool = (true, parse_bool, [UNTRACKED],
1577 "link native libraries in the linker invocation (default: yes)"),
1578 link_only: bool = (false, parse_bool, [TRACKED],
1579 "link the `.rlink` file generated by `-Z no-link` (default: no)"),
1580 llvm_plugins: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1581 "a list LLVM plugins to enable (space separated)"),
1582 llvm_time_trace: bool = (false, parse_bool, [UNTRACKED],
1583 "generate JSON tracing data file from LLVM data (default: no)"),
1584 location_detail: LocationDetail = (LocationDetail::all(), parse_location_detail, [TRACKED],
1585 "what location details should be tracked when using caller_location, either \
1586 `none`, or a comma separated list of location details, for which \
1587 valid options are `file`, `line`, and `column` (default: `file,line,column`)"),
1588 lower_impl_trait_in_trait_to_assoc_ty: bool = (false, parse_bool, [TRACKED],
1589 "modify the lowering strategy for `impl Trait` in traits so that they are lowered to \
1590 generic associated types"),
1591 ls: bool = (false, parse_bool, [UNTRACKED],
1592 "list the symbols defined by a library crate (default: no)"),
1593 macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
1594 "show macro backtraces (default: no)"),
1595 maximal_hir_to_mir_coverage: bool = (false, parse_bool, [TRACKED],
1596 "save as much information as possible about the correspondence between MIR and HIR \
1597 as source scopes (default: no)"),
1598 merge_functions: Option<MergeFunctions> = (None, parse_merge_functions, [TRACKED],
1599 "control the operation of the MergeFunctions LLVM pass, taking \
1600 the same values as the target option of the same name"),
1601 meta_stats: bool = (false, parse_bool, [UNTRACKED],
1602 "gather metadata statistics (default: no)"),
1603 mir_emit_retag: bool = (false, parse_bool, [TRACKED],
1604 "emit Retagging MIR statements, interpreted e.g., by miri; implies -Zmir-opt-level=0 \
1605 (default: no)"),
1606 mir_enable_passes: Vec<(String, bool)> = (Vec::new(), parse_list_with_polarity, [TRACKED],
1607 "use like `-Zmir-enable-passes=+DestinationPropagation,-InstSimplify`. Forces the specified passes to be \
1608 enabled, overriding all other checks. Passes that are not specified are enabled or \
1609 disabled by other flags as usual."),
1610 mir_include_spans: bool = (false, parse_bool, [UNTRACKED],
1611 "use line numbers relative to the function in mir pretty printing"),
1612 mir_keep_place_mention: bool = (false, parse_bool, [TRACKED],
1613 "keep place mention MIR statements, interpreted e.g., by miri; implies -Zmir-opt-level=0 \
1614 (default: no)"),
1615 #[rustc_lint_opt_deny_field_access("use `Session::mir_opt_level` instead of this field")]
1616 mir_opt_level: Option<usize> = (None, parse_opt_number, [TRACKED],
1617 "MIR optimization level (0-4; default: 1 in non optimized builds and 2 in optimized builds)"),
1618 move_size_limit: Option<usize> = (None, parse_opt_number, [TRACKED],
1619 "the size at which the `large_assignments` lint starts to be emitted"),
1620 mutable_noalias: bool = (true, parse_bool, [TRACKED],
1621 "emit noalias metadata for mutable references (default: yes)"),
1622 nll_facts: bool = (false, parse_bool, [UNTRACKED],
1623 "dump facts from NLL analysis into side files (default: no)"),
1624 nll_facts_dir: String = ("nll-facts".to_string(), parse_string, [UNTRACKED],
1625 "the directory the NLL facts are dumped into (default: `nll-facts`)"),
1626 no_analysis: bool = (false, parse_no_flag, [UNTRACKED],
1627 "parse and expand the source, but run no analysis"),
1628 no_codegen: bool = (false, parse_no_flag, [TRACKED_NO_CRATE_HASH],
1629 "run all passes except codegen; no output"),
1630 no_generate_arange_section: bool = (false, parse_no_flag, [TRACKED],
1631 "omit DWARF address ranges that give faster lookups"),
1632 no_jump_tables: bool = (false, parse_no_flag, [TRACKED],
1633 "disable the jump tables and lookup tables that can be generated from a switch case lowering"),
1634 no_leak_check: bool = (false, parse_no_flag, [UNTRACKED],
1635 "disable the 'leak check' for subtyping; unsound, but useful for tests"),
1636 no_link: bool = (false, parse_no_flag, [TRACKED],
1637 "compile without linking"),
1638 no_parallel_llvm: bool = (false, parse_no_flag, [UNTRACKED],
1639 "run LLVM in non-parallel mode (while keeping codegen-units and ThinLTO)"),
1640 no_profiler_runtime: bool = (false, parse_no_flag, [TRACKED],
1641 "prevent automatic injection of the profiler_builtins crate"),
1642 no_unique_section_names: bool = (false, parse_bool, [TRACKED],
1643 "do not use unique names for text and data sections when -Z function-sections is used"),
1644 normalize_docs: bool = (false, parse_bool, [TRACKED],
1645 "normalize associated items in rustdoc when generating documentation"),
1646 oom: OomStrategy = (OomStrategy::Abort, parse_oom_strategy, [TRACKED],
1647 "panic strategy for out-of-memory handling"),
1648 osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
1649 "pass `-install_name @rpath/...` to the macOS linker (default: no)"),
1650 packed_bundled_libs: bool = (false, parse_bool, [TRACKED],
1651 "change rlib format to store native libraries as archives"),
1652 panic_abort_tests: bool = (false, parse_bool, [TRACKED],
1653 "support compiling tests with panic=abort (default: no)"),
1654 panic_in_drop: PanicStrategy = (PanicStrategy::Unwind, parse_panic_strategy, [TRACKED],
1655 "panic strategy for panics in drops"),
1656 parse_only: bool = (false, parse_bool, [UNTRACKED],
1657 "parse only; do not compile, assemble, or link (default: no)"),
1658 perf_stats: bool = (false, parse_bool, [UNTRACKED],
1659 "print some performance-related statistics (default: no)"),
1660 plt: Option<bool> = (None, parse_opt_bool, [TRACKED],
1661 "whether to use the PLT when calling into shared libraries;
1662 only has effect for PIC code on systems with ELF binaries
1663 (default: PLT is disabled if full relro is enabled on x86_64)"),
1664 polonius: bool = (false, parse_bool, [TRACKED],
1665 "enable polonius-based borrow-checker (default: no)"),
1666 polymorphize: bool = (false, parse_bool, [TRACKED],
1667 "perform polymorphization analysis"),
1668 pre_link_arg: (/* redirected to pre_link_args */) = ((), parse_string_push, [UNTRACKED],
1669 "a single extra argument to prepend the linker invocation (can be used several times)"),
1670 pre_link_args: Vec<String> = (Vec::new(), parse_list, [UNTRACKED],
1671 "extra arguments to prepend to the linker invocation (space separated)"),
1672 precise_enum_drop_elaboration: bool = (true, parse_bool, [TRACKED],
1673 "use a more precise version of drop elaboration for matches on enums (default: yes). \
1674 This results in better codegen, but has caused miscompilations on some tier 2 platforms. \
1675 See #77382 and #74551."),
1676 print_fuel: Option<String> = (None, parse_opt_string, [TRACKED],
1677 "make rustc print the total optimization fuel used by a crate"),
1678 print_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
1679 "print the LLVM optimization passes being run (default: no)"),
1680 print_mono_items: Option<String> = (None, parse_opt_string, [UNTRACKED],
1681 "print the result of the monomorphization collection pass"),
1682 print_type_sizes: bool = (false, parse_bool, [UNTRACKED],
1683 "print layout information for each type encountered (default: no)"),
1684 print_vtable_sizes: bool = (false, parse_bool, [UNTRACKED],
1685 "print size comparison between old and new vtable layouts (default: no)"),
1686 proc_macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
1687 "show backtraces for panics during proc-macro execution (default: no)"),
1688 proc_macro_execution_strategy: ProcMacroExecutionStrategy = (ProcMacroExecutionStrategy::SameThread,
1689 parse_proc_macro_execution_strategy, [UNTRACKED],
1690 "how to run proc-macro code (default: same-thread)"),
1691 profile: bool = (false, parse_bool, [TRACKED],
1692 "insert profiling code (default: no)"),
1693 profile_closures: bool = (false, parse_no_flag, [UNTRACKED],
1694 "profile size of closures"),
1695 profile_emit: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
1696 "file path to emit profiling data at runtime when using 'profile' \
1697 (default based on relative source path)"),
1698 profile_sample_use: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
1699 "use the given `.prof` file for sampled profile-guided optimization (also known as AutoFDO)"),
1700 profiler_runtime: String = (String::from("profiler_builtins"), parse_string, [TRACKED],
1701 "name of the profiler runtime crate to automatically inject (default: `profiler_builtins`)"),
1702 query_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1703 "enable queries of the dependency graph for regression testing (default: no)"),
1704 randomize_layout: bool = (false, parse_bool, [TRACKED],
1705 "randomize the layout of types (default: no)"),
1706 relax_elf_relocations: Option<bool> = (None, parse_opt_bool, [TRACKED],
1707 "whether ELF relocations can be relaxed"),
1708 remap_cwd_prefix: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
1709 "remap paths under the current working directory to this path prefix"),
1710 remark_dir: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
1711 "directory into which to write optimization remarks (if not specified, they will be \
1712 written to standard error output)"),
1713 report_delayed_bugs: bool = (false, parse_bool, [TRACKED],
1714 "immediately print bugs registered with `delay_span_bug` (default: no)"),
1715 sanitizer: SanitizerSet = (SanitizerSet::empty(), parse_sanitizers, [TRACKED],
1716 "use a sanitizer"),
1717 sanitizer_cfi_canonical_jump_tables: Option<bool> = (Some(true), parse_opt_bool, [TRACKED],
1718 "enable canonical jump tables (default: yes)"),
1719 sanitizer_cfi_generalize_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
1720 "enable generalizing pointer types (default: no)"),
1721 sanitizer_cfi_normalize_integers: Option<bool> = (None, parse_opt_bool, [TRACKED],
1722 "enable normalizing integer types (default: no)"),
1723 sanitizer_memory_track_origins: usize = (0, parse_sanitizer_memory_track_origins, [TRACKED],
1724 "enable origins tracking in MemorySanitizer"),
1725 sanitizer_recover: SanitizerSet = (SanitizerSet::empty(), parse_sanitizers, [TRACKED],
1726 "enable recovery for selected sanitizers"),
1727 saturating_float_casts: Option<bool> = (None, parse_opt_bool, [TRACKED],
1728 "make float->int casts UB-free: numbers outside the integer type's range are clipped to \
1729 the max/min integer respectively, and NaN is mapped to 0 (default: yes)"),
1730 self_profile: SwitchWithOptPath = (SwitchWithOptPath::Disabled,
1731 parse_switch_with_opt_path, [UNTRACKED],
1732 "run the self profiler and output the raw event data"),
1733 self_profile_counter: String = ("wall-time".to_string(), parse_string, [UNTRACKED],
1734 "counter used by the self profiler (default: `wall-time`), one of:
1735 `wall-time` (monotonic clock, i.e. `std::time::Instant`)
1736 `instructions:u` (retired instructions, userspace-only)
1737 `instructions-minus-irqs:u` (subtracting hardware interrupt counts for extra accuracy)"
1738 ),
1739 /// keep this in sync with the event filter names in librustc_data_structures/profiling.rs
1740 self_profile_events: Option<Vec<String>> = (None, parse_opt_comma_list, [UNTRACKED],
1741 "specify the events recorded by the self profiler;
1742 for example: `-Z self-profile-events=default,query-keys`
1743 all options: none, all, default, generic-activity, query-provider, query-cache-hit
1744 query-blocked, incr-cache-load, incr-result-hashing, query-keys, function-args, args, llvm, artifact-sizes"),
1745 share_generics: Option<bool> = (None, parse_opt_bool, [TRACKED],
1746 "make the current crate share its generic instantiations"),
1747 show_span: Option<String> = (None, parse_opt_string, [TRACKED],
1748 "show spans for compiler debugging (expr|pat|ty)"),
1749 simulate_remapped_rust_src_base: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
1750 "simulate the effect of remap-debuginfo = true at bootstrapping by remapping path \
1751 to rust's source base directory. only meant for testing purposes"),
1752 span_debug: bool = (false, parse_bool, [UNTRACKED],
1753 "forward proc_macro::Span's `Debug` impl to `Span`"),
1754 /// o/w tests have closure@path
1755 span_free_formats: bool = (false, parse_bool, [UNTRACKED],
1756 "exclude spans when debug-printing compiler state (default: no)"),
1757 split_dwarf_inlining: bool = (false, parse_bool, [TRACKED],
1758 "provide minimal debug info in the object/executable to facilitate online \
1759 symbolication/stack traces in the absence of .dwo/.dwp files when using Split DWARF"),
1760 split_dwarf_kind: SplitDwarfKind = (SplitDwarfKind::Split, parse_split_dwarf_kind, [TRACKED],
1761 "split dwarf variant (only if -Csplit-debuginfo is enabled and on relevant platform)
1762 (default: `split`)
1763
1764 `split`: sections which do not require relocation are written into a DWARF object (`.dwo`)
1765 file which is ignored by the linker
1766 `single`: sections which do not require relocation are written into object file but ignored
1767 by the linker"),
1768 split_lto_unit: Option<bool> = (None, parse_opt_bool, [TRACKED],
1769 "enable LTO unit splitting (default: no)"),
1770 src_hash_algorithm: Option<SourceFileHashAlgorithm> = (None, parse_src_file_hash, [TRACKED],
1771 "hash algorithm of source files in debug info (`md5`, `sha1`, or `sha256`)"),
1772 #[rustc_lint_opt_deny_field_access("use `Session::stack_protector` instead of this field")]
1773 stack_protector: StackProtector = (StackProtector::None, parse_stack_protector, [TRACKED],
1774 "control stack smash protection strategy (`rustc --print stack-protector-strategies` for details)"),
1775 staticlib_allow_rdylib_deps: bool = (false, parse_bool, [TRACKED],
1776 "allow staticlibs to have rust dylib dependencies"),
1777 staticlib_prefer_dynamic: bool = (false, parse_bool, [TRACKED],
1778 "prefer dynamic linking to static linking for staticlibs (default: no)"),
1779 strict_init_checks: bool = (false, parse_bool, [TRACKED],
1780 "control if mem::uninitialized and mem::zeroed panic on more UB"),
1781 strip: Strip = (Strip::None, parse_strip, [UNTRACKED],
1782 "tell the linker which information to strip (`none` (default), `debuginfo` or `symbols`)"),
1783 symbol_mangling_version: Option<SymbolManglingVersion> = (None,
1784 parse_symbol_mangling_version, [TRACKED],
1785 "which mangling version to use for symbol names ('legacy' (default) or 'v0')"),
1786 #[rustc_lint_opt_deny_field_access("use `Session::teach` instead of this field")]
1787 teach: bool = (false, parse_bool, [TRACKED],
1788 "show extended diagnostic help (default: no)"),
1789 temps_dir: Option<String> = (None, parse_opt_string, [UNTRACKED],
1790 "the directory the intermediate files are written to"),
1791 terminal_urls: TerminalUrl = (TerminalUrl::No, parse_terminal_url, [UNTRACKED],
1792 "use the OSC 8 hyperlink terminal specification to print hyperlinks in the compiler output"),
1793 #[rustc_lint_opt_deny_field_access("use `Session::lto` instead of this field")]
1794 thinlto: Option<bool> = (None, parse_opt_bool, [TRACKED],
1795 "enable ThinLTO when possible"),
1796 thir_unsafeck: bool = (false, parse_bool, [TRACKED],
1797 "use the THIR unsafety checker (default: no)"),
1798 /// We default to 1 here since we want to behave like
1799 /// a sequential compiler for now. This'll likely be adjusted
1800 /// in the future. Note that -Zthreads=0 is the way to get
1801 /// the num_cpus behavior.
1802 #[rustc_lint_opt_deny_field_access("use `Session::threads` instead of this field")]
1803 threads: usize = (1, parse_threads, [UNTRACKED],
1804 "use a thread pool with N threads"),
1805 time_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
1806 "measure time of each LLVM pass (default: no)"),
1807 time_passes: bool = (false, parse_bool, [UNTRACKED],
1808 "measure time of each rustc pass (default: no)"),
1809 time_passes_format: TimePassesFormat = (TimePassesFormat::Text, parse_time_passes_format, [UNTRACKED],
1810 "the format to use for -Z time-passes (`text` (default) or `json`)"),
1811 tiny_const_eval_limit: bool = (false, parse_bool, [TRACKED],
1812 "sets a tiny, non-configurable limit for const eval; useful for compiler tests"),
1813 #[rustc_lint_opt_deny_field_access("use `Session::tls_model` instead of this field")]
1814 tls_model: Option<TlsModel> = (None, parse_tls_model, [TRACKED],
1815 "choose the TLS model to use (`rustc --print tls-models` for details)"),
1816 trace_macros: bool = (false, parse_bool, [UNTRACKED],
1817 "for every macro invocation, print its name and arguments (default: no)"),
1818 track_diagnostics: bool = (false, parse_bool, [UNTRACKED],
1819 "tracks where in rustc a diagnostic was emitted"),
1820 trait_solver: TraitSolver = (TraitSolver::Classic, parse_trait_solver, [TRACKED],
1821 "specify the trait solver mode used by rustc (default: classic)"),
1822 // Diagnostics are considered side-effects of a query (see `QuerySideEffects`) and are saved
1823 // alongside query results and changes to translation options can affect diagnostics - so
1824 // translation options should be tracked.
1825 translate_additional_ftl: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
1826 "additional fluent translation to preferentially use (for testing translation)"),
1827 translate_directionality_markers: bool = (false, parse_bool, [TRACKED],
1828 "emit directionality isolation markers in translated diagnostics"),
1829 translate_lang: Option<LanguageIdentifier> = (None, parse_opt_langid, [TRACKED],
1830 "language identifier for diagnostic output"),
1831 translate_remapped_path_to_local_path: bool = (true, parse_bool, [TRACKED],
1832 "translate remapped paths into local paths when possible (default: yes)"),
1833 trap_unreachable: Option<bool> = (None, parse_opt_bool, [TRACKED],
1834 "generate trap instructions for unreachable intrinsics (default: use target setting, usually yes)"),
1835 treat_err_as_bug: Option<NonZeroUsize> = (None, parse_treat_err_as_bug, [TRACKED],
1836 "treat error number `val` that occurs as bug"),
1837 trim_diagnostic_paths: bool = (true, parse_bool, [UNTRACKED],
1838 "in diagnostics, use heuristics to shorten paths referring to items"),
1839 tune_cpu: Option<String> = (None, parse_opt_string, [TRACKED],
1840 "select processor to schedule for (`rustc --print target-cpus` for details)"),
1841 ui_testing: bool = (false, parse_bool, [UNTRACKED],
1842 "emit compiler diagnostics in a form suitable for UI testing (default: no)"),
1843 uninit_const_chunk_threshold: usize = (16, parse_number, [TRACKED],
1844 "allow generating const initializers with mixed init/uninit chunks, \
1845 and set the maximum number of chunks for which this is allowed (default: 16)"),
1846 unleash_the_miri_inside_of_you: bool = (false, parse_bool, [TRACKED],
1847 "take the brakes off const evaluation. NOTE: this is unsound (default: no)"),
1848 unpretty: Option<String> = (None, parse_unpretty, [UNTRACKED],
1849 "present the input source, unstable (and less-pretty) variants;
1850 `normal`, `identified`,
1851 `expanded`, `expanded,identified`,
1852 `expanded,hygiene` (with internal representations),
1853 `ast-tree` (raw AST before expansion),
1854 `ast-tree,expanded` (raw AST after expansion),
1855 `hir` (the HIR), `hir,identified`,
1856 `hir,typed` (HIR with types for each node),
1857 `hir-tree` (dump the raw HIR),
1858 `mir` (the MIR), or `mir-cfg` (graphviz formatted MIR)"),
1859 unsound_mir_opts: bool = (false, parse_bool, [TRACKED],
1860 "enable unsound and buggy MIR optimizations (default: no)"),
1861 /// This name is kind of confusing: Most unstable options enable something themselves, while
1862 /// this just allows "normal" options to be feature-gated.
1863 #[rustc_lint_opt_deny_field_access("use `Session::unstable_options` instead of this field")]
1864 unstable_options: bool = (false, parse_bool, [UNTRACKED],
1865 "adds unstable command line options to rustc interface (default: no)"),
1866 use_ctors_section: Option<bool> = (None, parse_opt_bool, [TRACKED],
1867 "use legacy .ctors section for initializers rather than .init_array"),
1868 validate_mir: bool = (false, parse_bool, [UNTRACKED],
1869 "validate MIR after each transformation"),
1870 #[rustc_lint_opt_deny_field_access("use `Session::verbose` instead of this field")]
1871 verbose: bool = (false, parse_bool, [UNTRACKED],
1872 "in general, enable more debug printouts (default: no)"),
1873 #[rustc_lint_opt_deny_field_access("use `Session::verify_llvm_ir` instead of this field")]
1874 verify_llvm_ir: bool = (false, parse_bool, [TRACKED],
1875 "verify LLVM IR (default: no)"),
1876 virtual_function_elimination: bool = (false, parse_bool, [TRACKED],
1877 "enables dead virtual function elimination optimization. \
1878 Requires `-Clto[=[fat,yes]]`"),
1879 wasi_exec_model: Option<WasiExecModel> = (None, parse_wasi_exec_model, [TRACKED],
1880 "whether to build a wasi command or reactor"),
1881 // tidy-alphabetical-end
1882
1883 // If you add a new option, please update:
1884 // - compiler/rustc_interface/src/tests.rs
1885 }
1886
1887 #[derive(Clone, Hash, PartialEq, Eq, Debug)]
1888 pub enum WasiExecModel {
1889 Command,
1890 Reactor,
1891 }
1892
1893 #[derive(Clone, Copy, Hash)]
1894 pub enum LdImpl {
1895 Lld,
1896 }
1897